collinsbarrow.com

Valid Email Server
Domain Lookup › collinsbarrow.com

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
collinsbarrow.com
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-18 16:34:56 UTC · ↺ Refresh

MX Hostnames

  • collinsbarrow-com.mail.protection.outlook.com

MX Priorities

  • collinsbarrow-com.mail.protection.outlook.com: 5

A / AAAA Records

  • 165.227.248.71 (no PTR)

Mail Server IPs

  • 52.101.192.0 ↩ mail-yqzpr01cu00900.inbound.protection.outlook.com
  • 52.101.192.1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
  • 52.101.190.3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com
  • 52.101.190.0 ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c944::1 ↩ mail-yqzpr01cu01001.inbound.protection.outlook.com
  • 2a01:111:f403:c942:: ↩ mail-yt5pr01cu00100.inbound.protection.outlook.com
  • 2a01:111:f403:c942::2 ↩ mail-yt3pr01cu00602.inbound.protection.outlook.com
  • 2a01:111:f403:c942::3 ↩ mail-yt6pr01cu00103.inbound.protection.outlook.com

SOA Record

Raw SOA ns-662.awsdns-18.net awsdns-hostmaster.amazon.com 1 7200 900 1209600 86400
Primary NS (mname)
ns-662.awsdns-18.net
Admin Email (rname)
awsdns-hostmaster@amazon.com
Serial
1
Refresh
7200s
Retry
900s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns-1947.awsdns-51.co.uk
ns-374.awsdns-46.com
ns-662.awsdns-18.net
ns-1081.awsdns-07.org

SPF Record

✓ Soft Fail (~all)
v=spf1 ip4:216.8.176.225 include:spf.protection.outlook.com ?all
📊 DNS lookups: 1/10
? Neutral (?all) — no enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✗ None detected

No DKIM records found for common selectors — your provider may use a custom selector name.

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

5 records
  • facebook-domain-verification=5mrj3ou6t8mxk362qnr3w4xhvb0qcs
  • kkgjg9ehvt9mlgi35ciocv8hct
  • SPFv=spf1 ip4:216.8.176.225 include:spf.protection.outlook.com ?all
  • 5sakh79sgqa0aqe11lkjvoqomj
  • MS=ms60762128
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